air-to-airadj.

Brit.

/ˌɛːtᵿˈɛː/, U.S.

/ˈˌɛrtəˈɛ(ə)r/

Origin: Formed within English, by compounding. Etymons: air n.¹, to prep.

Etymology: < air n.¹ + to prep. + air n.¹

1. Directed from one aircraft to another while both are in flight; carried out between aircraft in flight.

ΘΚΠ

society > armed hostility > hostilities in the air > [adjective] > from one aircraft to another

air-to-air1939

1939 Times 14 Nov. 5/4 Air to air visibility is less than it is commonly thought to be. One is unlikely to sight another aircraft at a greater range than three miles.

1955 Sci. News Let. 26 Mar. 197/3 The Air Force has unveiled its newest guided missile..described as the ‘only air-to-air missile with a “brain” of its own’.

1962 F. W. Mulley Politics Western Def. iii. x. 182 Low altitude training presents a problem because of the shortage of facilities and the lack of air-to-air and surface-to-air firing ranges.

1999 M. Pokrant Desert Storm at Sea i. iii. 44 Using air-to-air refueling, Iraq had attacked as far as the Strait of Hormuz.

2. Designating or relating to a heating or cooling system in which heat exchange takes place between volumes of air.

ΘΚΠ

the world > matter > properties of materials > temperature > coldness > [adjective] > making cold or cool > specific technique of refrigeration

regenerative1850

air-to-air1943

1943 Jrnl. Sci. Instruments 20 11/2 Such tests give an overall air to air heat transfer coefficient.

1966 E. R. Ambrose Heat Pumps & Electric Heating iii. 33 Figure 3-1b is a modification of the basic air-to-air heat pump cycle.

1988 Truckstopping News Nov. 4/4 It will be air-to-air charge cooled with a fuel consumption of 186g per kWh.

1994 Midwest Home & Design Summer 17/1 A heat-recovery ventilator product, or air-to-air heat exchanger, exhausts household air, draws in fresh air, and transfers the heat from one airstream to the other.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online December 2021).

单词	air-to-air
释义	air-to-airadj. Brit. /ˌɛːtᵿˈɛː/, U.S. /ˈˌɛrtəˈɛ(ə)r/ Origin: Formed within English, by compounding. Etymons: air n.¹, to prep. Etymology: < air n.¹ + to prep. + air n.¹ 1. Directed from one aircraft to another while both are in flight; carried out between aircraft in flight. ΘΚΠ society > armed hostility > hostilities in the air > [adjective] > from one aircraft to another air-to-air1939 1939 Times 14 Nov. 5/4 Air to air visibility is less than it is commonly thought to be. One is unlikely to sight another aircraft at a greater range than three miles. 1955 Sci. News Let. 26 Mar. 197/3 The Air Force has unveiled its newest guided missile..described as the ‘only air-to-air missile with a “brain” of its own’. 1962 F. W. Mulley Politics Western Def. iii. x. 182 Low altitude training presents a problem because of the shortage of facilities and the lack of air-to-air and surface-to-air firing ranges. 1999 M. Pokrant Desert Storm at Sea i. iii. 44 Using air-to-air refueling, Iraq had attacked as far as the Strait of Hormuz. 2. Designating or relating to a heating or cooling system in which heat exchange takes place between volumes of air. ΘΚΠ the world > matter > properties of materials > temperature > coldness > [adjective] > making cold or cool > specific technique of refrigeration regenerative1850 air-to-air1943 1943 Jrnl. Sci. Instruments 20 11/2 Such tests give an overall air to air heat transfer coefficient. 1966 E. R. Ambrose Heat Pumps & Electric Heating iii. 33 Figure 3-1b is a modification of the basic air-to-air heat pump cycle. 1988 Truckstopping News Nov. 4/4 It will be air-to-air charge cooled with a fuel consumption of 186g per kWh. 1994 Midwest Home & Design Summer 17/1 A heat-recovery ventilator product, or air-to-air heat exchanger, exhausts household air, draws in fresh air, and transfers the heat from one airstream to the other. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online December 2021). < adj.1939
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